{"id":"CVE-2026-105326","summary":"Cups: cups: argument injection in mailto notifier via notify-recipient-uri","details":"An argument injection flaw was found in CUPS. When email notification is configured, the CUPS scheduler accepts printer subscription requests that supply a mailto notify-recipient-uri. The mailto notifier passes the recipient address to the configured sendmail program without ensuring it cannot be interpreted as command-line options. A remote attacker who can reach the CUPS service could supply a crafted recipient value starting with \"-\" to influence sendmail behavior. Successful exploitation depends on the installed mail transfer agent and CUPS network exposure, and may lead to execution of attacker-controlled commands with the privileges of the CUPS service user.","aliases":["GHSA-r4wf-366f-f6g3"],"modified":"2026-10-07T02:47:33.830754755Z","published":"2026-10-05T18:58:56.161Z","database_specific":{"cwe_ids":["CWE-88"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105326.json","cna_assigner":"redhat"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-105326"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105326.json"},{"type":"ADVISORY","url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-r4wf-366f-f6g3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105326"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545835"},{"type":"FIX","url":"https://github.com/OpenPrinting/cups/commit/1244ed9"},{"type":"FIX","url":"https://github.com/OpenPrinting/cups/commit/611d1bd"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openprinting/cups","events":[{"introduced":"0"},{"fixed":"1244ed9"},{"fixed":"611d1bd"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105326.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}